Here are a few quotes, it has been on the news, so it is probably old news to most:
"Americans who are 30 or more pounds over a healthy weight cost the country an estimated $147 billion in weight-related medical bills in 2008, double the amount a decade ago."
"Obesity now accouns for 9.1% of all medical spending, up from 6.5% in 1998. Overall, an ibese patient has $4,871 in medical bills a year compared with $3442 for a patient at a healthy weight."
"The average American is 23 pounds overweight, and collectively we are 4.6 billion pounds overweight." (CDC Director Thomas Frieden)
"Obese patients on Medicare spent about $600 a year more in prescription medications than patients at a healthy weight."